opik-evaluate skillA
opik-evaluate is agent-read markdown (skill) from comet-ml/opik-claude-code-plugin: Build an LLM evaluation and run it against the app, returning an Opik experiment with scores and its link. Picks a test suite with judge assertions or a dataset with metrics, sources cases from traces or synthetic data, scores heuristics-first then one-failure-mode judges, runs client-side via the SDK or server-side for prompt-only targets, and reads the scores back. Covers RAG evaluation, error analysis, and validating a judge against human labels. Use for "evaluate my agent", "measure quality".
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Evaluate — Build an Evaluation and Run It
**Definition of done:** an **experiment in Opik with scores**, its **link**, and a **score summary** the user can act on — produced by running the user's app (or prompt) over a set of cases with scoring that targets real failure modes. If the evaluation can't be built or run, stop at the **first** genuine blocker and return **exactly one** next step. A dataset with no run, a judge prompt with no scores, or a plan in prose is not success.
Operate: **ground the cases in what actually goes wrong, score with code before judges, judge one failure mode at a time, run once end to end, read the scores back from Opik — and change no application code.** The only file this skill writes is a runner outside the repo.
## Inputs
The entry point is `/opik-evaluate` (evaluate the app in this repo), `/opik-evaluate <what>` ("the RAG answers", "the refund flow"), or `/opik-evaluate <dataset-or-suite>` (run against existing cases). Infer the rest; treat these as **optional overrides**:
…Read the whole file at its exact version.
How to install
mdr add comet-ml/opik-claude-code-plugin/opik-evaluate@git:20260917.109a551mdr add comet-ml/opik-claude-code-plugin/opik-evaluate@sha256:81f18c3561595404Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_qydlydwa7u3z3h4m)
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Versions
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12520 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
comet-ml/opik-claude-code-plugin · 23 stars · license Apache-2.0 · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qydlydwa7u3z3h4m GET https://markdownregistry.com/api/v1/resolve?ref=comet-ml/opik-claude-code-plugin/opik-evaluate GET https://markdownregistry.com/api/v1/blob/81f18c356159540477d99135d17582c78bf443c339e0bc46a746f7ab8b76bd57
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.